The Beatles: Rock band Game

The Beatles: Rock Band is a music video game developed by Harmonix Music Systems, published by MTV Games and distributed by Electronic Arts. It is the third major console release in the Rock Band music video game series and, like other games in the series, it allows players to simulate the playing of rock music by using controllers shaped like musical instruments. The game's soundtrack consists of 45 songs by the popular British rock group The Beatles and features virtual depictions of the band members performing the songs. Additional songs and albums by The Beatles were made available for the game as downloadable content.
The game was released internationally on 9 September 2009, coinciding with the release of new, remastered compact disc versions of The Beatles albums. It incorporates many of the gameplay features of the Rock Band series; however, it is not an expansion pack for the Rock Band series and content for it and other Rock Band titles is not cross-compatible. Harmonix co-founder Alex Rigopulos described the game as "... a new, full game title production built from the ground up."[1] Gameplay mechanics differ slightly from previous Rock Band games, including the addition of a three-part vocal harmony system.

The Beatles: Rock Band allows players to perform simulated rock music by providing up to six players with the ability to play three different controllers modeled after music instruments (a guitar controller for lead guitar and bass guitar gameplay, a drum controller and up to three microphones for vocals). Players simulate the performance of rock music by using their controllers to play scrolling on-screen notes. For lead and bass guitar, this is accomplished by holding down colored buttons mimicking guitar frets and pushing the controller's strum bar; for drums, this requires striking the matching colored drumhead, or stepping on the pedal to simulate playing bass drum notes. When singing vocals, the player must sing in relative pitch to the original vocals. A pitch indicator displays the singer's accuracy relative to the original pitch. For songs with multi-part vocals, players need only to stay in tone with the lead singer to score points and keep their performance meter up, but players earn additional scoring bonuses when they successfully complete phrases in harmony.